Uh, the first one. It’s all downhill after that. It’s the only one he’s ever pulled off. Look at the goals for the master plan part 2 and you’ll see that they haven’t managed to do a single one, but Elon still went ahead a published a part 3. Why actually meet goals when you can just pretend you’ve met them by posting new ones, I guess.
Learning to drive. I’ve met a few people who didn’t learn to drive until their late 20’s or 30’s and there always seems to be some awkwardness to their driving. On the opposite side, learning to drive at 16 seems to encourage reckless habits to form, people I’ve known who waited until 18 have much better driving habits on average.